Method of manufacturing metal wheels.



G. KOWARSKY. METHOD 0E MANUFACTURING METAL WHEELS. APPLICATION FILEDMAR. 5, 1909.

939,71 4. ,Patented Nov. 9, 1909.

@wom/Lto@ @z'gfy wazmj? a. subjectvof the Czar of Russia, residing atwheel showing the body portion thereof coi'- 'description of theinvention, such as will 'which are'v cut into body 'portion and rim ofthe wheel.

invent-ion consists of certain novel features v'View of the same; Fig. 3is a similar view I.sl'iowing'a cross section of a bai.` rolled to-*form a wheel having a-ianged rim; Fig. 4

:through the wheel as shown in Fig. 6; Fig. f

,Oppositely the rim o s RWM UNiTED PATENT" onirica.A

`@faraoni-f-izowiu'zsmf, or Brea, nussm METHOD or MANUFA'QTURING METALWHEELS.

To azi whom a may cmi-'CMQ Beit known that I, GRIGORY 'KowARsKY,

Riga, Russia, have invented certainnew and useful Improvements inMethodsof Manufacturing MetalVTheels; and I do declare 'the following tobea full. clear, and exact eiiable'others skilled in the art to whichit' appertain's to make andjnse the same. This invention relates-toimprovements in the method of manufacturing metal wheels. rllhe objectof the invention is to provide a wheel formed from cast steel ingotsforged under the hammer and rolled into bars sections of the propershape, and said sections bent to form the With these and other objectsin View, the

of construction, combination and arraii ement of parts,-as will be morefully e-` scribed and particularly pointed out inthe appended claims.4

In the accom any-in drawings, Figure l is a side View ofJ one o the barsfrom which the wheels are formed showing in dotted lines the manner inwhich the bar 1s cut for forming 4the wheels; Fig. 2 is a. cross.sectional is a 'side View of one ofthe sectionsI into which the bar,shown in Fig. 1, is cut in the process of forming the wheel; Fig. 5 is.a 'side view of a partly formed wheel; Fig. 6 is a similaryiei'v of thewheel completely formed; Fig. 7 is a 4cross 'sectional View 8 is asimilar view showing the manner in Awhich the wheel may be curved orbent; `Fig. 9` is a detail .side view of a portion of a Specification ofLetters Patcnt. L Appueatimiea man 5,- isos. seriaiiwo. 481.256

. the drawings.

Patenten Nov. 95 1909.

plain aat rimmed when, while in rig. s the bar is shown as being rolledto forma wheel havinla flanged rim. v

In e process of forming the wheel from thebar l, the latter isy dividedlengthwise by a -staggered or' zigzag-cut 4 and'by a series ofperforations 5 formed at the apex Iof each pair of the staggered cuts,as shown.

By thus cutting the'bar the .body

ortion or web thereof 1s separated in the orm of a series ofsubstantially triangular sections 6.

After the bar has thus been separated 'each art is cut into suitablelengths and said engths are bent into circular form, which operationwillbring the -adjacentedges of 'the triangularly-shaped sections G intoengagement, thus forming the body portion of the wheelas clearly shownin Fig. 5 of After the lengths ofthe bar have thus been bent intocircular form the meeting edges ofthe .ianged edgel 3 are weldedtogether and thus form the rim of the wheel. l

In the process of bending the lengths of f the bar l to forni the wheelthe inner ends of the section 6 are vprojected into a groove `T'formed-in the outer sideof a cylindrical hub or boss 8 wliich'is'arranged inthe center of the body portion of the wheel as clearly shownFig. -of the drawing. Thehub or boss 8 is 'formed with a series ofradially projecting bifurcated lugs 9 which 'also engage the sections 6of the bar over the meetling edges of said sections, as shown. The huband lugs 9 are preferably welded to the 6. but 'may however be rivetedor bolted thereto to irnily secure the inner ends of the sections inoperative position. After the wheel has thus been formed the sections 6may be bent or curved to provide sections `.a curved wheel, as shown inFig. 8.` If desired I may pressor otherwise forni in the sections 6 aiseries of channels or corruga- Vtions, as shown in Figs. 9 and 10`,whereby the rigidity of the sections and the strength vof the wheel willbe increased.

.From the'foregoing description, taken in connection with theaccompanying drawings,the construction and operation of the inventionwill be readily understoodwith'out rel uiring a more extendedexplanation.

(Fario'us changes" in the form, proportion and the minor details ofconstruction may be resorted to without departing from the principle orsacricing any of theadvantages of this invention as defined in theappended.

claims.

I claim as my invention- 1. A method of constructin metal wheels whichconsists in dividing ai ar longitudinally by a staiggered cut to Aformtwo men1'A bers, then ben each of said members into circula-r form an-unitin the ends-thereof,

and then mounting a hu on the free .end

of thev cut ortion of each member.

2. A met od of construetinmetal wheels which consists in dividing a arlongitudinally by a staggered cut t0 form tiwo sections eachhavingsubstantially triangular laterally extendlng vmembers withV-shaped recesses between them, then bending4 each of said sections intocircular-form and uniting the ends thereof, and then mounting la hu onthe free ends'of the cut portion of' each metal wheels angular members,then bending each o f said members into circular form' and unitin theends thereof and then mounting a lhu on the free ends of thetruncatedtriangular members.

4. A method of constructin metalwheels which consists individing aarlong1tud1' na'llyv on a staggered line, then'dividing the s0 cutsections transversely into suitable cular form and uniting the meetingedges' thereof, landy ythen .mounting a hub on the free ends of the cutportion'of each section.

5. A method of forming metal wheels,

-from anged iron barswhichscowts in dividing a bar longitudinally intosectnsby-\/\- a staggered cut, then bending 'said sections into circularshape to form vthe body portion.- and rim of the wheel, and thenmounting a l hubat the center of said body portion.

In testimony whereofv I have hereunto set my hand in presence of twosubscribing witnesses. l

' Y `(J`rRIGrORY KOWARSKY Witnesses: l

HERNANDO DE Soro, LAt'mANce HILL.

lengths, then bending said lengths into cir-

